Mesoporous supported catalyst material and preparation method thereof

A technology of catalysts and composite catalysts, applied in the direction of molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of inappropriate carrier and catalyst, poor compatibility, easy agglomeration, etc., and achieve excellent catalytic performance, Excellent repeated use and good load uniformity

Active Publication Date: 2020-07-03
CHONGQING UNIV OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of preparing the composite, the technical problems that need to be overcome are that the carrier and the catalyst are not suitable, the compatibility between the two is poor, the catalyst cannot be successfully loaded on the carrier or the loading capacity is low, and the particle size growth of the catalyst on the carrier is uncontrollable. Poor dispersion, prone to agglomeration, reduced catalytic activity after the catalyst is loaded on the carrier, easy to fall off the carrier during use, poor stability, short service life and other technical problems

Method used

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  • Mesoporous supported catalyst material and preparation method thereof
  • Mesoporous supported catalyst material and preparation method thereof
  • Mesoporous supported catalyst material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A preparation method for a supported composite catalyst, characterized in that, proceed as follows:

[0042] (1), Ni(NO 3 ) 2 9H 2 O and C 4 h 6 MnO·4H 2 O was dissolved in distilled water and ultrasonically dissolved for 15 minutes to form a mixed solution A, Ni(NO 3 ) 2 9H 2 O, C 4 h 6 MnO·4H 2 The consumption ratio of O and distilled water is 0.4955g:0.4456g:30mL;

[0043] (2) Add the surfactant polyethylene glycol 4000 to the mixture A while stirring, and then ultrasonicate for 5 minutes. The mass volume ratio of polyethylene glycol 4000 to the distilled water in the mixture A is 1.3:10, and then add it while stirring SBA-15, followed by ultrasonication for 45 minutes to form a mixed solution B, the stirring speed is 100r / min, and the mass volume ratio of SBA-15 to mixed solution A is 1g: 30mL;

[0044] (3) Place the mixed solution B on a magnetic stirrer at 55°C and heat and stir until the suspension becomes a paste-like material, and the stirring rate ...

Embodiment 2

[0048] A preparation method for a supported composite catalyst, characterized in that, proceed as follows:

[0049] (1), Ni(NO 3 ) 2 9H 2 O and C 4 h 6 MnO·4H 2 O was dissolved in distilled water and ultrasonically dissolved for 20 minutes to form a mixed solution A, Ni(NO 3 ) 2 9H 2 O, C 4 h 6 MnO·4H 2 The consumption ratio of O and distilled water is 0.4955g:0.4456g:30mL;

[0050] (2) Add the surfactant polyethylene glycol 4000 to the mixed solution A while stirring, and ultrasonicate for 5 minutes. The mass volume ratio of polyethylene glycol 4000 to the distilled water in the mixed solution A is 1.5:10, and then add it while stirring SBA-15, and conduct ultrasound for 40min to form the mixed solution B, the stirring rate is 100r / min, the mass volume ratio of SBA-15 to the mixed solution A is 1g:30mL;

[0051] (3) Place the mixed solution B on a magnetic stirrer at 55°C and heat and stir until the suspension becomes a paste-like material, and the stirring rate i...

Embodiment 3

[0055] A preparation method for a loaded composite catalyst, carried out as follows:

[0056] (1), Ni(NO 3 ) 2 9H 2 O and C 4 h6 MnO·4H 2 O was dissolved in distilled water and ultrasonically dissolved for 10 min to form a mixture A, Ni(NO 3 ) 2 9H 2 O, C 4 h 6 MnO·4H 2 The consumption ratio of O and distilled water is 0.4955g:0.4456g:30mL;

[0057] (2) Add the surfactant polyethylene glycol 4000 to the mixed solution A while stirring, and then ultrasonicate for 5 minutes. The mass volume ratio of polyethylene glycol 4000 and distilled water in the mixed solution A is 1:10, and then add it while stirring SBA-15, and conduct ultrasound for 45min to form the mixed solution B, the stirring speed is 100r / min, the mass volume ratio of SBA-15 to the mixed solution A is 1g:30mL;

[0058] (3) Add the surfactant polyethylene glycol 4000 to the mixed liquid B, then ultrasonicate for 5 minutes, place it on a magnetic stirrer at 55°C, heat and stir until the suspension becomes ...

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Abstract

A mesoporous supported composite catalyst is a (Ni0.13Mn0.87)(Ni0.87Mn1.13)O/SBA-15 composite material, bimetallic oxide (Ni0.13Mn0.87)(Ni0.87Mn1.13)O4 particles are uniformly attached to the surfaceof the SBA-15 and the interior of a mesoporous channel, and are orderly arranged, and the total loading capacity of the (Ni0.13Mn0. 87)(Ni0.87Mn1.13)O4 on the SBA-15 is 20%. In the prepared (Ni0.13Mn0.87)(Ni0.87Mn1.13)O4/SBA-15, the size of (Ni0.13Mn0.87)(Ni0.87Mn1.13)O4 is small, the loading uniformity on the SBA-15 is good, agglomeration is avoided, the catalytic activity is high and can reach 99.47%, the time required for degrading sulfadiazine is short, and the composite catalyst has excellent catalytic performance in a large-range pH change environment, has a good stability in the catalytic performance, and can be repeatedly used; and after the composite catalyst is used for 10 times, the catalytic activity still can reach 94.6%, stability is kept, and the repeated use stability is excellent.

Description

technical field [0001] The invention relates to the technical field of advanced oxidation, in particular to a mesoporous supported catalyst material and a preparation method thereof. Background technique [0002] Antibiotics are widely used in the prevention and treatment of bacterial infectious diseases in humans and livestock, which will cause various bacteria to produce antibodies. At the same time, antibiotics left in medical and medical wastewater will also enter the environment as pollutants and pose a serious threat to human, animal and environmental protection. . Since antibiotics are difficult to be degraded by microorganisms, if reasonable and effective measures are not taken, there will be more and more residual antibiotics in the environment. According to the research of the Chinese Academy of Sciences on antibiotic pollution, in my country, more than 50,000 tons of antibiotics are discharged into the soil and water environment in a year. Therefore, there is an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/03B01J35/10C02F1/72C02F101/30
CPCB01J29/0341B01J35/006B01J35/1004C02F1/725C02F2101/40
Inventor 何家洪徐强黄俊豪姚昱岑丁武泉
Owner CHONGQING UNIV OF ARTS & SCI
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